Code p13b6

[SGJB135i]

Hey guys I'm getting a p13b4 and p13b6 code on my n54. It's been at the shop for weeks trying to get this code deleted. Everytime I turn on the car after deleting , it comes back on and there is no info on it at all, so I'm in desperate help! I did change the knock sensors but still having problems! Please let me know anything! Thank you In advance!

[___whoosh___]

Originally Posted by Jetblack135

Hey guys I'm getting a p13b4 and p13b6 code on my n54. It's been at the shop for weeks trying to get this code deleted. Everytime I turn on the car after deleting , it comes back on and there is no info on it at all, so I'm in desperate help! I did change the knock sensors but still having problems! Please let me know anything! Thank you In advance!

I'm not familiar with code issues on this platform yet but I'd start with coil replacement and spark plug inspection to rule out misfires from those simple and relatively cheap repairs

[Stohlen]

Here's what I found:

"P13B6 (05046) - Detonation Detection System misfire (BIS)".
"P13B4 (2A98) - Inlet camshaft correlation."